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https://www.readbyqxmd.com/read/27904797/preseason-jump-and-hop-measures-in-male-collegiate-basketball-players-an-epidemiologic-report
#1
Jason Brumitt, Amy Engilis, Dale Isaak, Amy Briggs, Alma Mattocks
BACKGROUND: Injuries are inherent in basketball with lower extremity (LE) injury rates reported as high as 11.6 per 1000 athletic exposures (AEs); many of these injuries result in time loss from sport participation. A recent trend in sports medicine research has been the attempt to identify athletes who may be at risk for injury based on measures of preseason fitness. HYPOTHESIS/PURPOSE: The purpose of this prospective cohort study was to determine if the standing long jump (SLJ) and/or the single-leg hop (SLH) for distance functional performance tests (FPT) are associated with non-contact time loss lower quadrant (LQ, defined as lower extremities or low back) injury in collegiate male basketball players...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27898872/the-effect-of-oxidative-stress-during-exercise-in-the-horse
#2
C A Williams
Oxidative stress is an imbalance of the oxidant-to-antioxidant ratio in the body. Increases in oxidative stress and changes in antioxidant status have been shown during endurance and intense exercise and eventing competition in horses. Antioxidants include vitamins, minerals, enzymes, and proteins that must be synthesized in the body or obtained from the diet. Therefore, exercise level and diet are both factors that play a role in influencing the oxidative stress and antioxidant status of the equine athlete...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27882600/muscular-fitness-and-metabolic-and-inflammatory-biomarkers-in-adolescents-results-from-labmed-physical-activity-study
#3
C A Agostinis-Sobrinho, C Moreira, S Abreu, L Lopes, L B Sardinha, J Oliveira-Santos, A Oliveira, J Mota, R Santos
This study aimed to evaluate the associations between muscular fitness and inflammatory biomarkers and to investigate the relationship between muscular fitness and selected clustered inflammatory biomarkers in adolescents. This is a cross-sectional analysis with 529 adolescents (267 girls) aged 12-18 years. Handgrip strength and standing long jump tests assessed MF. Continuous scores of clustered inflammatory biomarkers (sum of Z-scores of C-reactive protein [CRP], C3, C4, fibrinogen, and leptin); metabolic risk factor (MRF) score (sum of Z-scores of SBP, triglycerides, ratio total cholesterol [TC]/HDL, HOMA-IR, and waist circumference [WC]) were computed...
November 23, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27876855/navigation-by-anomalous-random-walks-on-complex-networks
#4
Tongfeng Weng, Jie Zhang, Moein Khajehnejad, Michael Small, Rui Zheng, Pan Hui
Anomalous random walks having long-range jumps are a critical branch of dynamical processes on networks, which can model a number of search and transport processes. However, traditional measurements based on mean first passage time are not useful as they fail to characterize the cost associated with each jump. Here we introduce a new concept of mean first traverse distance (MFTD) to characterize anomalous random walks that represents the expected traverse distance taken by walkers searching from source node to target node, and we provide a procedure for calculating the MFTD between two nodes...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27870694/does-intrasession-concurrent-strength-and-aerobic-training-order-influence-training-induced-explosive-strength-and-v-combining-dot-above-o2max-in-prepubescent-children
#5
Ana R Alves, Carlos C Marta, Henrique P Neiva, Mikel Izquierdo, Mário C Marques
Alves, AR, Marta, C, Neiva, HP, Izquierdo, M, and Marques, MC. Does intrasession concurrent strength and aerobic training order influence training-induced explosive strength and V[Combining Dot Above]O2max in prepubescent children?. J Strength Cond Res 30(12): 3267-3277, 2016-The aim of this study was to analyze the interference of strength and aerobic training order over an 8-week period on explosive skills and maximal oxygen uptake (V[Combining Dot Above]O2max) in prepubescent children. One hundred twenty-eight prepubescent children aged 10-11 years (10...
December 0: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27856901/improving-photosynthesis-and-crop-productivity-by-accelerating-recovery-from-photoprotection
#6
Johannes Kromdijk, Katarzyna Głowacka, Lauriebeth Leonelli, Stéphane T Gabilly, Masakazu Iwai, Krishna K Niyogi, Stephen P Long
Crop leaves in full sunlight dissipate damaging excess absorbed light energy as heat. When sunlit leaves are shaded by clouds or other leaves, this protective dissipation continues for many minutes and reduces photosynthesis. Calculations have shown that this could cost field crops up to 20% of their potential yield. Here, we describe the bioengineering of an accelerated response to natural shading events in Nicotiana (tobacco), resulting in increased leaf carbon dioxide uptake and plant dry matter productivity by about 15% in fluctuating light...
November 18, 2016: Science
https://www.readbyqxmd.com/read/27837043/reliability-of-sargent-jump-test-in-4-to-5-year-old-children
#7
Carlos AyánPérez, José M CancelaCarral, Joaquín Lago-Ballesteros, Iván Martínez-Lemos
We assessed the test-retest reliability of the Sargent jump (VJ) for vertical jumping performed by 4 and 5 years old pre-schoolers. The VJ was administered three times (familiarization, test, and retest) to 163 children (mean age: 4.48 ± 0.5 years; 55.8% girls). The results were compared with those obtained in the standing long jump (SLJ) and in the 25 -m dash test to identify how its performance correlated with other measures of leg power. Systematic change in the mean and retest correlations with these other measures were used to help analyze VJ test-retest reliability...
November 11, 2016: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/27826498/functional-diversity-of-resilin-in-arthropoda
#8
REVIEW
Jan Michels, Esther Appel, Stanislav N Gorb
Resilin is an elastomeric protein typically occurring in exoskeletons of arthropods. It is composed of randomly orientated coiled polypeptide chains that are covalently cross-linked together at regular intervals by the two unusual amino acids dityrosine and trityrosine forming a stable network with a high degree of flexibility and mobility. As a result of its molecular prerequisites, resilin features exceptional rubber-like properties including a relatively low stiffness, a rather pronounced long-range deformability and a nearly perfect elastic recovery...
2016: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/27814350/retrotransposons-jump-into-alternative-splicing-regulation-via-a-long-noncoding-rna
#9
Reini F Luco
No abstract text is available yet for this article.
November 4, 2016: Nature Structural & Molecular Biology
https://www.readbyqxmd.com/read/27806003/fitness-profiles-of-elite-adolescent-irish-rugby-union-players
#10
Daniel J Wood, Garrett Coughlan, Eamonn Delahunt
Rugby unions throughout the world are implementing player development models in order to prepare young players to meet the demands of professional rugby union. An example of this is the Irish Rugby Football Union Long Term Player Development model. The purpose of the present study was to provide normative data relating to the physical fitness of elite adolescent Irish rugby union players and determine the differences in the physical capacities between players in the forward and back units, as well as providing descriptive data for the position categorizations within these units for this unique population...
October 27, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27796659/place-avoidance-learning-and-memory-in-a-jumping-spider
#11
Tina Peckmezian, Phillip W Taylor
Using a conditioned passive place avoidance paradigm, we investigated the relative importance of three experimental parameters on learning and memory in a salticid, Servaea incana. Spiders encountered an aversive electric shock stimulus paired with one side of a two-sided arena. Our three parameters were the ecological relevance of the visual stimulus, the time interval between trials and the time interval before test. We paired electric shock with either a black or white visual stimulus, as prior studies in our laboratory have demonstrated that S...
October 28, 2016: Animal Cognition
https://www.readbyqxmd.com/read/27792217/recreational-football-training-improved-health-related-physical-fitness-in-9-to-10-year-old-boys
#12
Jin Wang, Liquan Cao, Pengfei Xie, Jianxiong Wang
BACKGROUND: Recreational football is an aerobic/anaerobic intermittent sport with altering exercise periods at high or low intensity. Various football drills and body movement in this exercise may easily attract children to take part in. The purpose of this study was to test the hypothesis that recreational football training would improve the health-related physical fitness in healthy 9- to 10-year-old boys, compared to the outcome from non-exercise boys. METHODS: Forty boys were randomly allocated into the football and control groups...
October 28, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27790707/hematopoietic-stem-cell-independent-hematopoiesis-emergence-of-erythroid-megakaryocyte-and-myeloid-potential-in-the-mammalian-embryo
#13
REVIEW
James Palis
Steady-state production of all circulating blood cells in the adult ultimately depends on hematopoietic stem cells (HSCs), which first arise in small numbers beginning at embryonic day (E) 10.5 in large arterial vessels of the murine embryo. However, blood cell synthesis first begins in the yolk sac beginning at E7.25 and consists of two waves of hematopoietic progenitors. The first wave consists of primitive erythroid, megakaryocyte, and macrophage progenitors that rapidly give rise to maturing blood cells of all three lineages...
October 13, 2016: FEBS Letters
https://www.readbyqxmd.com/read/27789072/long-term-results-of-arthroscopic-arthrolysis-for-arthrofibrosis-after-anterior-cruciate-ligament-reconstruction
#14
Hermann O Mayr, Christian M Brandt, Thomas Weig, Manuel Koehne, Anke Bernstein, Norbert P Suedkamp, Robert Hube, Amelie Stoehr
PURPOSE: The current study was conducted to evaluate the long-term clinical and radiological outcomes after arthroscopic arthrolysis for arthrofibrosis after anterior cruciate ligament reconstruction (ACLR). METHODS: All patients treated with arthrolysis between 1990 and 1998 were included. Indication was arthrofibrosis in at least one knee compartment or a cyclops syndrome limiting range of motion (ROM) by > 5° of extension deficit and 15° of flexion deficit...
October 24, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27787471/twelve-weeks-of-plyometric-training-improves-motor-performance-of-7-10-year-old-overweight-obese-boys-a-randomized-controlled-intervention
#15
Gabriela Góes Nobre, Marcelus Brito de Almeida, Isabele Góes Nobre, Fernanda Karina Dos Santos, Raphael Arnaut Brinco, Thalison Ricardo Arruda-Lima, Kenya Larissa de-Vasconcelos, Jociellen Gomes de-Lima, Manoel Etelberto Borba-Neto, Emmanuel Martins Damasceno-Rodrigues, Steve Martin Santos-Silva, Carol Góis Leandro, Marcos André Moura-Dos-Santos
The prevalence of childhood overweight/obesity has increased, and physical training at school may to be effective to combat this scenario. We analyzed the effects of a protocol of plyometric training on body composition and motor performance of overweight/obese boys aged 7 to 9 years. The sample was randomly assigned into 2 groups: plyometric training group (T, n = 40) and control group (C, n = 19). Training consisted of 20 minutes/day (twice a week, during twelve weeks) of lower extremity plyometric exercise...
October 13, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27782460/collective-concerted-motion-in-a-molecular-adlayer-visualized-through-the-surface-diffusion-of-isolated-vacancies
#16
Christian Urban, Roberto Otero, David Écija, Marta Trelka, Nazario Martín, José M Gallego, Rodolfo Miranda
We have measured STM movies to study the diffusion of individual vacancies in a self-assembled layer of a tetrathiafulvalene derivative (exTTF) on Au(111) at room temperature. The diffusion is anisotropic, being faster along the compact direction of the molecular lattice. A detailed analysis of the anisotropic displacement distribution of the single vacancies shows that the relative abundance of double jumps (that is, the collective motion of molecular dimers) with respect to single jumps is rather large, the number of double jumps being more than 20% of the diffusion events...
October 21, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/27777734/why-fly-the-extra-mile-latitudinal-trend-in-migratory-fuel-deposition-rate-as-driver-of-trans-equatorial-long-distance-migration
#17
Yaara Aharon-Rotman, Ken Gosbell, Clive Minton, Marcel Klaassen
Trans-equatorial long-distance migrations of high-latitude breeding animals have been attributed to narrow ecological niche widths. We suggest an alternative hypothesis postulating that trans-equatorial migrations result from a possible increase in the rate at which body stores to fuel migration are deposited with absolute latitude; that is, longer, migrations away from the breeding grounds surpassing the equator may actually enhance fueling rates on the nonbreeding grounds and therewith the chance of a successful, speedy and timely migration back to the breeding grounds...
September 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/27768554/the-influence-of-familiarization-on-physical-fitness-test-results-in-primary-school-aged-children
#18
Ivan Vrbik, Goran Sporiš, Lovro Štefan, Dejan Madić, Nebojša Trajković, Irena Valantine, Zoran Milanović
PURPOSE: The number of familiarization sessions in fitness assessments seems to be critical and inconsistent. Therefore, the primary aim of this research was to determine the number of familiarization attempts that stabilize the results in particular physical fitness tests. The secondary aim was to establish the test reliability through familiarization sessions. METHODS: Thirty-nine primary school children participated in this research (age: 10.8 years, body mass: 40...
October 21, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27768546/exercise-training-improved-body-composition-cardiovascular-function-and-physical-fitness-of-5-year-old-children-with-obesity-or-normal-body-mass
#19
Sijie Tan, Cheng Chen, Mingyang Sui, Lunan Xue, Jianxiong Wang
OBJECTIVES: To explore the effects of exercise training on body composition, cardiovascular function, and physical fitness in 5-year-old obese and lean children. METHODS: 42 obese and 62 lean children were randomly allocated into exercise and control groups separately. Body composition, cardiovascular function, and physical fitness were measured at baseline and the end of the intervention. The exercise groups participated in 10 weeks of supervised moderate intensity exercise training (at 50% of heart rate reserve), 50 training sessions in total...
October 21, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27757284/the-relationship-between-trunk-endurance-plank-tests-and-athletic-performance-tests-in-adolescent-soccer-players
#20
Atsushi Imai, Koji Kaneoka
BACKGROUND: Although it is believed that trunk function is important for athletic performance, few researchers have demonstrated a significant relationship between the trunk function and athletic performance. Recently, the prone plank and side plank tests have been used to assess trunk function. PURPOSE: The purpose of this study was to investigate the relationships between trunk endurance plank tests and athletic performance tests, including whether there is a relationship between long distance running and trunk endurance plank tests in adolescent male soccer players...
October 2016: International Journal of Sports Physical Therapy
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